diff --git a/src/librnode.c b/src/librnode.c
index c857739..f7e090f 100755
--- a/src/librnode.c
+++ b/src/librnode.c
@@ -1252,7 +1252,7 @@ int rnode_set_checksum(struct RNode* rn, uint8_t* checksum) {
 }
 
 /* Generate's an RNode's EEPROM signature from the checksum
- * THE RETURNED POINTER MUST BE free()'D!
+ * THE RETURNED POINTER MUST BE OPENSSL_free()'D!
  * Scope: public
  * Returns
  * 0 - success
diff --git a/src/librnode.h b/src/librnode.h
index 2c3138d..ac4a22f 100644
--- a/src/librnode.h
+++ b/src/librnode.h
@@ -447,6 +447,7 @@ int rnode_calculate_checksum(struct RNode* rn, uint8_t* checksum);
 int rnode_set_checksum(struct RNode* rn, uint8_t* checksum);
 
 /* Generate's an RNode's EEPROM signature from the checksum
+ * THE RETURNED POINTER MUST BE OPENSSL_free()'D!
  * Scope: public
  * Returns
  * 0 - success